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"""
Custom usage: window creation and mapping callbacks functions at module level
"""
import math
import random
import moderngl_window
from moderngl_window.conf import settings
from moderngl_window.timers.clock import Timer
window = None
def main():
global window
# Configure to use pyglet window
settings.WINDOW['class'] = 'moderngl_window.context.pyglet.Window'
window = moderngl_window.create_window_from_settings()
# Map callback functions
window.resize_func = resize
window.iconify_func = iconify
window.key_event_func = key_event
window.mouse_position_event_func = mouse_position_event
window.mouse_drag_event_func = mouse_drag_event
window.mouse_scroll_event_func = mouse_scroll_event
window.mouse_press_event_func = mouse_press_event
window.mouse_release_event_func = mouse_release_event
window.unicode_char_entered_func = unicode_char_entered
timer = Timer()
timer.start()
while not window.is_closing:
window.use()
window.clear()
time, frame_time = timer.next_frame()
window.ctx.clear(
(math.sin(time) + 1.0) / 2,
(math.sin(time + 2) + 1.0) / 2,
(math.sin(time + 3) + 1.0) / 2,
)
window.swap_buffers()
window.destroy()
def render(time: float, frametime: float):
# We can also check if a key is in press state here
if window.is_key_pressed(window.keys.SPACE):
print("User is holding SPACE button")
def resize(width: int, height: int):
print("Window was resized. buffer size is {} x {}".format(width, height))
def iconify(iconify: bool):
"""Window hide/minimize and restore"""
print("Window was iconified:", iconify)
def key_event(key, action, modifiers):
keys = window.keys
# Key presses
if action == keys.ACTION_PRESS:
if key == keys.SPACE:
print("SPACE key was pressed")
# Using modifiers (shift and ctrl)
if key == keys.Z and modifiers.shift:
print("Shift + Z was pressed")
if key == keys.Z and modifiers.ctrl:
print("ctrl + Z was pressed")
# Key releases
elif action == keys.ACTION_RELEASE:
if key == keys.SPACE:
print("SPACE key was released")
# Move the window around with AWSD
if action == keys.ACTION_PRESS:
if key == keys.A:
window.position = window.position[0] - 10, window.position[1]
if key == keys.D:
window.position = window.position[0] + 10, window.position[1]
if key == keys.W:
window.position = window.position[0], window.position[1] - 10
if key == keys.S:
window.position = window.position[0], window.position[1] + 10
# toggle cursor
if key == keys.C:
window.cursor = not window.cursor
# Shuffle window tittle
if key == keys.T:
title = list(window.title)
random.shuffle(title)
window.title = ''.join(title)
# Toggle mouse exclusivity
if key == keys.M:
window.mouse_exclusivity = not window.mouse_exclusivity
def mouse_position_event(x, y, dx, dy):
print("Mouse position pos={} {} delta={} {}".format(x, y, dx, dy))
def mouse_drag_event(x, y, dx, dy):
print("Mouse drag pos={} {} delta={} {}".format(x, y, dx, dy))
def mouse_scroll_event(x_offset, y_offset):
print("mouse_scroll_event", x_offset, y_offset)
def mouse_press_event(x, y, button):
print("Mouse button {} pressed at {}, {}".format(button, x, y))
print("Mouse states:", window.mouse_states)
def mouse_release_event(x: int, y: int, button: int):
print("Mouse button {} released at {}, {}".format(button, x, y))
print("Mouse states:", window.mouse_states)
def unicode_char_entered(char):
print("unicode_char_entered:", char)
if __name__ == '__main__':
main()
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